Water heater



WATER HEATER Filed Oct. 16, 1933 L5. WU

` ATTOR NEYS J, U m 02 0 Z U J U J J U J L f 6 1| H HI .L @o 6 z n w J M J h 9 H H J .1| l l Q/@ v Patented Jan. Z9, 1935 UNITED STATES PATENT OFFICE 1 Claim.

The invention relates to a Water heater. The object of the invention is the provision of a heater of this character, wherein there is arranged series of alternately disposed vertically` aligned water circulating and heating units so that cold water admitted to the circulating units will successively progress in a zig-zag course and will be subjected to heat so that the water will become quickly heated and its temperature increased from the inlet to the outlet end of the heater and in this manner assuring instantaneous heating of the Water and a continuity of hot water supply for consumption.

Another object of the invention is the provision of a heater of this character which is extremely simple in construction, thoroughly reliable and efficient in its operation, economical in the consumption of fuel, having maximum heating quality, strong, durable, and inexpensive to manufacture and install.

With these and other objects in View, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described in detail, illustrated in the accompanying drawing, which discloses the preferred embodiment of the invention, and pointed out in the claim hereunto appended.

In the accompanying drawing:

Figure 1 is a vertical sectional view of a heater constructed in accordance with the invention and showing one of the water circulating units in section.

Figure 2 is a sectional View on the line 2 2 of Figure 1 looking in the direction of the arrows.

Figure 3 is an enlarged horizontal sectional View through one of the Water circulating units.

Similar reference characters indicate corresponding parts throughout the several views in the drawing.

Referring to the drawing in detail, the water heater comprises a main cylindrical shell or casing 5 having the bottom and head pieces 6 and 7, respectively, intertted therewith, the bottom piece being provided with a central air inlet 8 While the head 6 is formed with a central chimney y disposed diametrically opposite one another. The

water circulating units 10 are of hollow circular formation and have provided ltherein spaced transverse partitions 13 and disposed for fluidity of Water therebetween about alternate ends 14 of said partition, whereby the water will have a zigzag course within each circulating unit and progressively from the lowermost unit to the uppermost of the series.

Each heating element 11 is in this instance a circular gas burner 15 connected by a lead 16 from a supply main or feed pipe 17, the latter being provided with a hand operable cut-off valve 18.

Opening into the lowermost Water circulating unit 10 is a cold water supply pipe 19, while leading from the uppermost water circulating unit 10 is a hot water delivery pipe 20, these pipes 19 and 20 being remote from the riser pipes 12 communicative with said lowermost and uppermost water circulating units.

Tapped into the feed pipe 17 is a pilot light feed tube 21 having the pilot burners 22l extended through the shell or casing 5 to be located at the burners 15 so that when the gas is turned on to the said burners 15 the same can be lighted by the pilot, the tube 21 being connected with the pipe 17 below the point of location of the valve 18. It Will be understood, of course, that the pilot burners 22 are at all times burning or lighted Whe the heater is in use. f

The shell or casing 5 is provided with a suitable door 23 to permit access to the interior and this shell or casing is suitably insulated (not shown) and each burner has the usual air inlet control 24.

It will be seen that when the burners 15 are lighted, the ames therefrom play upon the water circulating units 10 and as the water flows through such units 10 it will have a circuitous or zigzag course and the series of burners in their relation to the series of water circulating units will thoroughly heat the Water and the temperature of such water will constantly rise from the inlet end of the heater to the delivery or discharge end thereof.

What is claimed is:

A heater of the kind described comprising a cylindrical shell having bottom ,and head pieces, respectively, intertted therewith, the bottom piece being provided with a central air inlet, a central chimney rising from the head piece for expelling spent products of combustion from the shell, alternately arranged vertically aligned water circulating units and heating elements, respectively, located within the shell, these being equally spaced from each other, riser pipes joining the circulating units and alternately disposed having connection with the other of the outermost circulating units, and pilot burners disposed above the heating units and having communication with their supply main to be unaffected by the cut-off valve therein.

CHARLES M. BECHTEL. 

